If you have iTunes it's fairly easy to do. Just go to the iTunes store and find the new link. Both formats (MP3 or Enhanced) are available in the iTunes store so get the one that's right for you. Just don't forget to delete the old link.

Thanks for posting your latest episode. Like the other podcasts posting their episodes here, I am going to ask that you keep it all to one thread. It will make it easier for listeners to find your latest if it's all in one place.